Ingot-extractor



(No Model.) 3 Sheets-Sheet l, J. P. LEWIS. INGOT EXTBAGTOR.

Patented Aug. 9, 1892.

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I 3 Sheets-Sheet 2, J. F. LEWIS.'

INGOT EXTRACTOR.

No. 480,432. Patented Aug. 9, 1892.

i... WITNESSES. INV NTOR.

UNITED STATES PATENT OFFICE.

JOHN F. LEWIS, OF TURTLE CREEK, PENNSYLVANIA.

INGOT-EXTRACTO R.

SPECIFICATION forming part of Letters Patent No. 480,432, dated August 9, 1892.

Application filed November 5, 1891. Serial No. 410,926. (No model.)

T0 au whom, it may concern.-

Be it known that I, JOHN F. LEWIS, a citizen of the United States, residing at Turtle Creek, in the county of Allegheny, State of Pennsylvania, have invented certain new and useful Improvements in Ingot Extractors; and I hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Referring to the drawings forming a part of this specication, Figure 1 is a front elevation of my improved extractor, with the motive cylinders shown in section. Fig. 2 is an end elevation of the same with parts broken away. Fig. 3 is a cross-section on the line III III of Fig. 1. Fig. 4 is an elevation, partly broken away, of a modilication, showing the lower cylinders single-acting with counterbalances to lift the plungers.

My invention relates to that class of ingotextractors wherein the mold is stripped upwardly from the ingot, the ingot being held stationary by a stop; and it consists in the improved combination and arrangement of the parts as hereinafter more fully described, and set forth in the claims.

In the drawings, wherein like numerals indicate corresponding parts, 2 2 represent the end posts of the supporting-frame each pair of posts being connected by the cross-beams 3. Upon these cross-beams rest thev longitudinal beams 4, having V-shaped grooves in their upper sides, in which the corresponding V- shaped projections upon the slide 5 are guided as the slide reciprocates, it being actuated by the piston-rod 6 of the motive cylinder 7, which rod is pivoted thereto, as shown in Fig. 1. Supported by passing through this slide are two vertical cylinders 8, attached thereto by suitable flanges 9, which are bolted to the slide. Each of these cylinders are divided into two chambers 11 and 12, by means of the division plate or diaphragm 10, and in these chambers 11 and 12 reciprocate independent pistons or plungers numbered 13 and 14, respectively. To the upper ends of the plungers 13 the cross-heads 15 are attached by a swivel connection, and pivoted to the cross-heads are the two pendent bars 16, provided at their lower ends with pivotal hooks 17, adapted to engage the lugs upon the mold.

The chamber 11. constitutes a single-acting cylinder, fluid being admitted through pipe 11', which enters the diaphragm 10 and leads upwardly into the chamber, While into the chamber 12 lead the two pipes 12 and 13', thus making it a double-acting cylinder.

Between the posts 2 lead the two tracks 19 upon which move the cars 20, which support the molds, the molds upon one track being filled and those upon the other being empty.

The operation is as follows: A car 20, carrying the ingot containing molds thereon, is moved beneath the beams 4. Motive fluid is admitted to the cylinder 7, and slide 5 is thereby moved to a position directly over the mold. The lugs of the mold are then engaged by the hooks 17 and plungers 14 adjusted until they rest upon the tops of the ingots, they being held downwardly by the fluid admitted above the same. Fluid then being admitted to the upper cylinders, the plungers 13 move upwardly and through the rod 16 strip the molds from the ingots which remain upon the car. The slide is then actuated to deposit the molds upon the adjacent car on the other track, and these operations are repeated as often as desired.

It is evident that many minor changes may be made in the form and arrangement of the parts without departing from myinvention, which I regard as lying essentially in the two vertical cylinders, one located directly above the other, so that the strain is evenly distributed and no canting or tipping of the plungers produced.

In Fig. 4 is illustrated modiiied means for lifting the lower plunger 14 through the medium of springs or counterbalances and fluid or steam pressure. In the former instance I provide the cylinder 8 with a projecting lug 8, in which are journaled rollers b to set off the weight or other counterbalancing medium from the cylinder. Over these rollers passes a chain or cord c, to one of which is secured a weight or its equivalent d, the other end passing down over an anti-friction roller con the cylinder 12 and under a roller f on the plunger 14, after which it is secured t-o an eye on the cylinder. Upon the downward movement of the plunger the weight is elevated through the medium of the chain or cord, and when the plunger is relieved of its downward ICO pr ssure the weight, being the heavier, will assert its gravitating force and return the plunger to its normal position. To the left of Fig. 4 I have shown for convenience of illustration another means for elevating the plunger when relieved of downward pressure, which consists of a cylinder g, secured to a bracket 8g on the cylinder 8, said cylinder g being provided at its upper end with an inlet or exhaust port g for steam, iiuid, &c. Sliding in this cylinder is a piston h, the outer end of which is provided with a roller c' to engage the chain or cord c and act in the same manner thereupon as the weight or its equivalent in the former instance. When downward pressure is applied to the plunger 14, the piston 71. in the cylinder g is elevated, and upon relief of pressure upon the plunger pressure is introduced above the piston h in cylinder g, which thrusts the same downward and returns the same to its normal position. The two cylinders 8 and the slide 5 may also be cast integral, as indicated at j, Fig. 4; also, it is obvious that one or more cylinders may be employed.

The advantages of my construction lie in its simplicity and the total absence of unequal straiu upon the parts and in the consequent long life of the extractor.

What I claim as new is- 1. An ingot-extractor comprising two independent vertically-movable plungers in Vertical alignmentwith each other, the upper plunger being provided with means for engagement with the mold, and means for reciproeating the plungers, substantially as and for the purposes described. Y

2. An ingot-extractor comprising two independently-movable plungers in vertical alignment with each other, a cross-head swiveled to the upper plunger, hooked rods depending from said cross-head and arranged to engage the mold, and means for reciprocating the pluugers, substantially as and for the purposes described.

3. An ingot-extractor comprising a movable slide carrying a cylinder divided into two chambers by a diaphragm, plungers movable in said chambers, the upper plunger being provided with depending rods arranged to engage the mold, and duid-supply pipes for the cylinder, substantially as and for the purposes described.

4. An ingot-extractor comprising a framework carrying an elevated slide, two vertical plunger-cylinders, one above the other, supported thereby, the lower plunger arranged to bear on the ingot, hooked rods depending from the upper plunger, fluid-supply pipes for the cylinder, and a car movable beneath -the slide and arranged to support the molds, substantially as and for the purposes described.

5. An ingot-extractor comprising a framework, an elevated slide carried thereon, two plunger-cylinders, one above the other, supported upon the slide, hooked rods depending from the upper plunger, the lower plunger arranged to bear on the ingot, fluid-supply pipes for the cylinders, two tracks passing beneath the slide, and cars movable thereon, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand this 22d day of October, A. D. 1891.

JOI-IN F. LEWIS.

Witnesses:

W. B. CORWIN, H. M. CoRwIN. 

